Art style felt a bit jarring at first with the high contrast shading and colors, but I think it has a certain charm to it once I got used to it.
Can't really add much without echoing what other people have already said about the axe and the time it takes to chop down trees, but it's neat so far! Encountered the same issue as Penguin Garden with the upgrade buying too btw, wasn't sure if it was intentional or not.